Home / 71,784.48-99,050.40-39,948.96

Finding the Fourth Proportional to 71,784.48, 99,050.40 and 39,948.96

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Solution

The fourth proportional to 71,784.48, 99,050.40 and 39,948.96 is: 55,122.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,784.48 : 99,050.40 = 39,948.96 : x
  2. Step 2: Convert to fraction form
    71,784.48/99,050.40 = 39,948.96/x
  3. Step 3: Cross multiply
    71,784.48x = 99,050.40 × 39,948.96
  4. Step 4: Simplify right side
    71,784.48x = 3,956,960,467.58
  5. Step 5: Solve for x
    x = 3,956,960,467.58/71,784.48
  6. Step 6: Final answer
    x = 55,122.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.